/* HuertoUrbano CL - Urban Gardening Website CSS */
/* Design System Variables */
:root {
  --forest-green: #3E5C45;
  --terracotta: #C97853;
  --sand: #E7D8B1;
  --deep-navy: #0B1220;
  --soft-gray: #A7B0BD;
  
  /* Typography Scale */
  --font-size-1: 1.2rem;
  --font-size-2: 1.5rem;
  --font-size-3: 2.25rem;
  --font-size-4: 3.1rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Layout */
  --max-width: 1200px;
  --gutter: 1.5rem;
  --border-radius: 16px;
  --shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.32);
  
  /* Animation */
  --transition-fast: 160ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 220ms ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  font-size: var(--font-size-1);
  line-height: 1.6;
  color: var(--deep-navy);
  background: linear-gradient(135deg, var(--sand) 0%, #f5f2e8 100%);
  min-height: 100vh;
}

/* Typography */
h1 {
  font-size: var(--font-size-4);
  font-weight: 700;
  line-height: 1.2;
  color: var(--forest-green);
}

h2 {
  font-size: var(--font-size-3);
  font-weight: 600;
  line-height: 1.3;
  color: var(--forest-green);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: var(--font-size-2);
  font-weight: 600;
  line-height: 1.4;
  color: var(--forest-green);
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: var(--font-size-1);
  font-weight: 600;
  line-height: 1.4;
  color: var(--forest-green);
  margin-bottom: var(--spacing-xs);
}

/* Layout Components */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(62, 92, 69, 0.1);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  font-size: var(--font-size-2);
  font-weight: 700;
  color: var(--forest-green);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-links a {
  color: var(--deep-navy);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover {
  color: var(--forest-green);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--terracotta);
  transition: width var(--transition-fast);
}

.nav-links a:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-2);
  color: var(--forest-green);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(135deg, 
    rgba(62, 92, 69, 0.05) 0%, 
    rgba(201, 120, 83, 0.05) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%233E5C45" fill-opacity="0.03"><path d="M30 30c0-11.046-8.954-20-20-20s-20 8.954-20 20 8.954 20 20 20 20-8.954 20-20zm-20-18c9.941 0 18 8.059 18 18s-8.059 18-18 18-18-8.059-18-18 8.059-18 18-18z"/></g></g></svg>');
  opacity: 0.1;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--forest-green), var(--terracotta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: var(--font-size-2);
  color: var(--soft-gray);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--forest-green);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: all var(--transition-normal);
  border: 2px solid var(--forest-green);
  cursor: pointer;
}

.btn:hover {
  background: var(--terracotta);
  border-color: var(--terracotta);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.btn-outline {
  background: transparent;
  color: var(--forest-green);
}

.btn-outline:hover {
  background: var(--forest-green);
  color: white;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
  transition: all var(--transition-normal);
  border: 1px solid rgba(62, 92, 69, 0.1);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: calc(var(--border-radius) - 4px);
  margin-bottom: var(--spacing-md);
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

.card p {
  color: var(--soft-gray);
  margin-bottom: var(--spacing-md);
}

/* Stats Section */
.stats {
  padding: var(--spacing-xxl) 0;
  background: var(--forest-green);
  color: white;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
}

.stat h3 {
  font-size: var(--font-size-4);
  color: var(--sand);
  margin-bottom: var(--spacing-xs);
}

.stat p {
  font-size: var(--font-size-1);
  opacity: 0.9;
}

/* Filter Chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.chip {
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(62, 92, 69, 0.1);
  color: var(--forest-green);
  border: 1px solid rgba(62, 92, 69, 0.2);
  border-radius: 25px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.chip:hover,
.chip.active {
  background: var(--forest-green);
  color: white;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 8px;
  background: var(--terracotta);
  color: white;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge.beginner {
  background: var(--forest-green);
}

.badge.urban {
  background: var(--terracotta);
}

.badge.eco {
  background: #2E7D32;
}

/* Newsletter */
.newsletter {
  background: linear-gradient(135deg, var(--forest-green), var(--terracotta));
  color: white;
  padding: var(--spacing-xxl) 0;
  text-align: center;
}

.newsletter-form {
  display: flex;
  max-width: 400px;
  margin: var(--spacing-lg) auto 0;
  gap: var(--spacing-sm);
}

.newsletter input {
  flex: 1;
  padding: var(--spacing-sm);
  border: none;
  border-radius: 25px;
  font-size: var(--font-size-1);
}

/* Footer */
.footer {
  background: var(--deep-navy);
  color: white;
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--sand);
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
  color: var(--soft-gray);
  text-decoration: none;
  line-height: 1.8;
}

.footer-section a:hover {
  color: var(--sand);
}

.footer-bottom {
  border-top: 1px solid rgba(167, 176, 189, 0.2);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--soft-gray);
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  background: var(--forest-green);
  color: white;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--terracotta);
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  h1 {
    font-size: var(--font-size-3);
  }
  
  .hero p {
    font-size: var(--font-size-1);
  }
  
  .grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .filter-chips {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: var(--font-size-2);
  }
  
  h2 {
    font-size: var(--font-size-2);
  }
}

/* Article Content Styles */
.article-content {
  background: white;
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing-xl);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  color: var(--soft-gray);
  font-size: 0.9rem;
}

.article-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin: var(--spacing-lg) 0;
}

/* Category Page Styles */
.category-header {
  background: linear-gradient(135deg, var(--forest-green), var(--terracotta));
  color: white;
  padding: var(--spacing-xxl) 0;
  text-align: center;
}

.category-header h1 {
  color: white;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

/* Legal Page Styles */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.legal-content h2 {
  color: var(--forest-green);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.legal-content p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus States */
button:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--terracotta);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --forest-green: #2d4a35;
    --terracotta: #b06d48;
    --deep-navy: #000000;
  }
}